EP 4398435 A1 20240710 - A METHOD FOR OPERATING A POWER SUPPLY SYSTEM AND A POWER SUPPLY SYSTEM
Title (en)
A METHOD FOR OPERATING A POWER SUPPLY SYSTEM AND A POWER SUPPLY SYSTEM
Title (de)
VERFAHREN ZUM BETRIEB EINES STROMVERSORGUNGSSYSTEMS UND STROMVERSORGUNGSSYSTEM
Title (fr)
PROCÉDÉ DE FONCTIONNEMENT D'UN SYSTÈME D'ALIMENTATION ÉLECTRIQUE ET SYSTÈME D'ALIMENTATION ÉLECTRIQUE
Publication
Application
Priority
EP 23150321 A 20230104
Abstract (en)
A method for operating a power supply system connected to a grid and including a rotor (106), a DFIG (118), a power conversion assembly (210), and an active filter (270) is disclosed. The DFIG (118) includes a generator rotor (122) mechanically connected with the rotor (106) and a generator stator (120). The power conversion assembly (210) includes a rotor-side power converter (220). The active filter (270) is electrically connected with the generator stator (120) via a stator bus (208). The rotor-side power converter (220) is electrically connected with the generator rotor (122) via a rotor bus (212). The method includes: determining (1100, 2100, 3100), based on a rotor frequency (fr) of the generator rotor (122), an expected harmonic frequency ({f<sub>h</sub>}) for a stator current (Is) flowing on the stator bus (208); determining (1200, 2200, 3200), in a data set comprising stator current values ({Is}), a current amplitude ({I<sub>h</sub>}) of the stator current (Is) at the expected harmonic frequency ({f<sub>h</sub>}); and controlling (1300, 2300, 3300), based on the current amplitude ({I<sub>h</sub>}) of the stator current (Is) at the expected harmonic frequency ({f<sub>h</sub>}), the active filter (270).
IPC 8 full level
CPC (source: EP US)
F03D 9/255 (2017.02 - US); H02J 3/01 (2013.01 - EP); H02J 3/381 (2013.01 - EP); H02P 9/007 (2013.01 - US); H02P 9/105 (2013.01 - US); F05B 2220/706 (2013.01 - US); H02J 2300/28 (2020.01 - EP); H02P 2101/15 (2015.01 - US)
Citation (applicant)
M. MADRIGAL: "A Step Forward in the Modeling of the Doubly-fed Induction Machine for Harmonic Analysis", IEEE TRANSACTIONS ON ENERGY CONVERSION, vol. 29, no. 1, pages 149 - 157, XP011540157, DOI: 10.1109/TEC.2013.2290297
Citation (search report)
- [A] EP 3745551 A1 20201202 - GEN ELECTRIC [US]
- [A] EP 3484007 A1 20190515 - GEN ELECTRIC [US]
- [A] US 2011074365 A1 20110331 - NAKAYAMA YASUAKI [JP], et al
- [A] MISHRA VENKTESH ET AL: "Load Harmonics Compensation in Autonomous DFIG Based Wind Turbine Systems", 2018 3RD INTERNATIONAL CONFERENCE AND WORKSHOPS ON RECENT ADVANCES AND INNOVATIONS IN ENGINEERING (ICRAIE), IEEE, 22 November 2018 (2018-11-22), pages 1 - 7, XP033546971, DOI: 10.1109/ICRAIE.2018.8710388
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4398435 A1 20240710; CN 118300106 A 20240705; US 2024223112 A1 20240704
DOCDB simple family (application)
EP 23150321 A 20230104; CN 202410002839 A 20240102; US 202418403017 A 20240103